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Don't copy metadata after loading

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This commit is contained in:
Brian Anderson 2013-08-23 18:40:15 -07:00
parent 041d8e899f
commit 39e8cb6df3
7 changed files with 132 additions and 83 deletions
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77
src/libextra/ebml.rs
View File

@ -12,6 +12,8 @@
use std::str;
use std::cast;
use std::vec;
// Simple Extensible Binary Markup Language (ebml) reader and writer on a
// cursor model. See the specification here:
@ -29,9 +31,42 @@ struct EbmlState {
data_pos: uint,
}
#[deriving(Clone)]
pub enum EbmlData {
SafeData(@~[u8]),
UnsafeData(*u8, uint)
}
impl EbmlData {
#[inline]
pub fn slice<'a>(&'a self, start: uint, end: uint) -> &'a [u8] {
match *self {
SafeData(@ref v) => v.slice(start, end),
UnsafeData(buf, len) => unsafe {
do vec::raw::buf_as_slice(buf, len) |s| {
cast::transmute(s.slice(start, end))
}
}
}
}
#[inline]
pub fn as_slice<'a>(&'a self) -> &'a [u8] {
self.slice(0, self.len())
}
#[inline]
pub fn len(&self) -> uint {
match *self {
SafeData(@ref v) => v.len(),
UnsafeData(_, len) => len
}
}
}
#[deriving(Clone)]
pub struct Doc {
data: @~[u8],
data: EbmlData,
start: uint,
end: uint,
}
@ -185,24 +220,28 @@ pub fn vuint_at(data: &[u8], start: uint) -> Res {
}
pub fn Doc(data: @~[u8]) -> Doc {
Doc { data: data, start: 0u, end: data.len() }
Doc { data: SafeData(data), start: 0u, end: data.len() }
}
pub fn doc_at(data: @~[u8], start: uint) -> TaggedDoc {
let elt_tag = vuint_at(*data, start);
let elt_size = vuint_at(*data, elt_tag.next);
pub fn unsafe_Doc(buf: *u8, len: uint) -> Doc {
Doc { data: UnsafeData(buf, len), start: 0u, end: len }
}
pub fn doc_at(data: &EbmlData, start: uint) -> TaggedDoc {
let elt_tag = vuint_at(data.as_slice(), start);
let elt_size = vuint_at(data.as_slice(), elt_tag.next);
let end = elt_size.next + elt_size.val;
TaggedDoc {
tag: elt_tag.val,
doc: Doc { data: data, start: elt_size.next, end: end }
doc: Doc { data: data.clone(), start: elt_size.next, end: end }
}
}
pub fn maybe_get_doc(d: Doc, tg: uint) -> Option<Doc> {
let mut pos = d.start;
while pos < d.end {
let elt_tag = vuint_at(*d.data, pos);
let elt_size = vuint_at(*d.data, elt_tag.next);
let elt_tag = vuint_at(d.data.as_slice(), pos);
let elt_size = vuint_at(d.data.as_slice(), elt_tag.next);
pos = elt_size.next + elt_size.val;
if elt_tag.val == tg {
return Some(Doc { data: d.data, start: elt_size.next,
@ -225,8 +264,8 @@ pub fn get_doc(d: Doc, tg: uint) -> Doc {
pub fn docs(d: Doc, it: &fn(uint, Doc) -> bool) -> bool {
let mut pos = d.start;
while pos < d.end {
let elt_tag = vuint_at(*d.data, pos);
let elt_size = vuint_at(*d.data, elt_tag.next);
let elt_tag = vuint_at(d.data.as_slice(), pos);
let elt_size = vuint_at(d.data.as_slice(), elt_tag.next);
pos = elt_size.next + elt_size.val;
let doc = Doc { data: d.data, start: elt_size.next, end: pos };
if !it(elt_tag.val, doc) {
@ -239,8 +278,8 @@ pub fn docs(d: Doc, it: &fn(uint, Doc) -> bool) -> bool {
pub fn tagged_docs(d: Doc, tg: uint, it: &fn(Doc) -> bool) -> bool {
let mut pos = d.start;
while pos < d.end {
let elt_tag = vuint_at(*d.data, pos);
let elt_size = vuint_at(*d.data, elt_tag.next);
let elt_tag = vuint_at(d.data.as_slice(), pos);
let elt_size = vuint_at(d.data.as_slice(), elt_tag.next);
pos = elt_size.next + elt_size.val;
if elt_tag.val == tg {
let doc = Doc { data: d.data, start: elt_size.next,
@ -260,22 +299,22 @@ pub fn with_doc_data<T>(d: Doc, f: &fn(x: &[u8]) -> T) -> T {
pub fn doc_as_u8(d: Doc) -> u8 {
assert_eq!(d.end, d.start + 1u);
(*d.data)[d.start]
d.data.as_slice()[d.start]
}
pub fn doc_as_u16(d: Doc) -> u16 {
assert_eq!(d.end, d.start + 2u);
io::u64_from_be_bytes(*d.data, d.start, 2u) as u16
io::u64_from_be_bytes(d.data.as_slice(), d.start, 2u) as u16
}
pub fn doc_as_u32(d: Doc) -> u32 {
assert_eq!(d.end, d.start + 4u);
io::u64_from_be_bytes(*d.data, d.start, 4u) as u32
io::u64_from_be_bytes(d.data.as_slice(), d.start, 4u) as u32
}
pub fn doc_as_u64(d: Doc) -> u64 {
assert_eq!(d.end, d.start + 8u);
io::u64_from_be_bytes(*d.data, d.start, 8u)
io::u64_from_be_bytes(d.data.as_slice(), d.start, 8u)
}
pub fn doc_as_i8(d: Doc) -> i8 { doc_as_u8(d) as i8 }
@ -298,8 +337,7 @@ pub fn Decoder(d: Doc) -> Decoder {
impl Decoder {
fn _check_label(&mut self, lbl: &str) {
if self.pos < self.parent.end {
let TaggedDoc { tag: r_tag, doc: r_doc } =
doc_at(self.parent.data, self.pos);
let TaggedDoc { tag: r_tag, doc: r_doc } = doc_at(&self.parent.data, self.pos);
if r_tag == (EsLabel as uint) {
self.pos = r_doc.end;
@ -316,8 +354,7 @@ fn next_doc(&mut self, exp_tag: EbmlEncoderTag) -> Doc {
if self.pos >= self.parent.end {
fail!("no more documents in current node!");
}
let TaggedDoc { tag: r_tag, doc: r_doc } =
doc_at(self.parent.data, self.pos);
let TaggedDoc { tag: r_tag, doc: r_doc } = doc_at(&self.parent.data, self.pos);
debug!("self.parent=%?-%? self.pos=%? r_tag=%? r_doc=%?-%?",
self.parent.start,
self.parent.end,

3
src/librustc/metadata/creader.rs
View File

@ -15,6 +15,7 @@
use metadata::decoder;
use metadata::filesearch::FileSearch;
use metadata::loader;
use metadata::loader::MetadataSection;
use std::hashmap::HashMap;
use syntax::ast;
@ -308,7 +309,7 @@ fn resolve_crate(e: @mut Env,
}
// Go through the crate metadata and load any crates that it references
fn resolve_crate_deps(e: @mut Env, cdata: @~[u8]) -> cstore::cnum_map {
fn resolve_crate_deps(e: @mut Env, cdata: MetadataSection) -> cstore::cnum_map {
debug!("resolving deps of external crate");
// The map from crate numbers in the crate we're resolving to local crate
// numbers

2
src/librustc/metadata/csearch.rs
View File

@ -188,7 +188,7 @@ pub fn get_field_type(tcx: ty::ctxt, class_id: ast::def_id,
def: ast::def_id) -> ty::ty_param_bounds_and_ty {
let cstore = tcx.cstore;
let cdata = cstore::get_crate_data(cstore, class_id.crate);
let all_items = reader::get_doc(reader::Doc(cdata.data), tag_items);
let all_items = reader::get_doc(decoder::section_to_ebml_doc(cdata.data), tag_items);
debug!("Looking up %?", class_id);
let class_doc = expect(tcx.diag,
decoder::maybe_find_item(class_id.node, all_items),

3
src/librustc/metadata/cstore.rs
View File

@ -15,6 +15,7 @@
use metadata::cstore;
use metadata::decoder;
use metadata::loader::MetadataSection;
use std::hashmap::HashMap;
use extra;
@ -29,7 +30,7 @@
pub struct crate_metadata {
name: @str,
data: @~[u8],
data: MetadataSection,
cnum_map: cnum_map,
cnum: ast::CrateNum
}

78
src/librustc/metadata/decoder.rs
View File

@ -20,6 +20,7 @@
use metadata::tydecode::{parse_ty_data, parse_def_id,
parse_type_param_def_data,
parse_bare_fn_ty_data, parse_trait_ref_data};
use metadata::loader::{MetadataSection, CopiedSection, UnsafeSection};
use middle::ty;
use middle::typeck;
use middle::astencode::vtable_decoder_helpers;
@ -56,16 +57,16 @@ fn lookup_hash(d: ebml::Doc, eq_fn: &fn(x:&[u8]) -> bool, hash: u64) ->
let index = reader::get_doc(d, tag_index);
let table = reader::get_doc(index, tag_index_table);
let hash_pos = table.start + (hash % 256 * 4) as uint;
let pos = io::u64_from_be_bytes(*d.data, hash_pos, 4) as uint;
let tagged_doc = reader::doc_at(d.data, pos);
let pos = io::u64_from_be_bytes(d.data.as_slice(), hash_pos, 4) as uint;
let tagged_doc = reader::doc_at(&d.data, pos);
let belt = tag_index_buckets_bucket_elt;
let mut ret = None;
do reader::tagged_docs(tagged_doc.doc, belt) |elt| {
let pos = io::u64_from_be_bytes(*elt.data, elt.start, 4) as uint;
let pos = io::u64_from_be_bytes(elt.data.as_slice(), elt.start, 4) as uint;
if eq_fn(elt.data.slice(elt.start + 4, elt.end)) {
ret = Some(reader::doc_at(d.data, pos).doc);
ret = Some(reader::doc_at(&d.data, pos).doc);
false
} else {
true
@ -96,8 +97,8 @@ fn find_item(item_id: int, items: ebml::Doc) -> ebml::Doc {
// Looks up an item in the given metadata and returns an ebml doc pointing
// to the item data.
fn lookup_item(item_id: int, data: @~[u8]) -> ebml::Doc {
let items = reader::get_doc(reader::Doc(data), tag_items);
fn lookup_item(item_id: int, data: MetadataSection) -> ebml::Doc {
let items = reader::get_doc(section_to_ebml_doc(data), tag_items);
find_item(item_id, items)
}
@ -215,13 +216,13 @@ fn variant_disr_val(d: ebml::Doc) -> Option<uint> {
fn doc_type(doc: ebml::Doc, tcx: ty::ctxt, cdata: cmd) -> ty::t {
let tp = reader::get_doc(doc, tag_items_data_item_type);
parse_ty_data(*tp.data, cdata.cnum, tp.start, tcx,
parse_ty_data(tp.data.as_slice(), cdata.cnum, tp.start, tcx,
|_, did| translate_def_id(cdata, did))
}
fn doc_method_fty(doc: ebml::Doc, tcx: ty::ctxt, cdata: cmd) -> ty::BareFnTy {
let tp = reader::get_doc(doc, tag_item_method_fty);
parse_bare_fn_ty_data(*tp.data, cdata.cnum, tp.start, tcx,
parse_bare_fn_ty_data(tp.data.as_slice(), cdata.cnum, tp.start, tcx,
|_, did| translate_def_id(cdata, did))
}
@ -230,7 +231,7 @@ fn doc_transformed_self_ty(doc: ebml::Doc,
cdata: cmd) -> Option<ty::t>
{
do reader::maybe_get_doc(doc, tag_item_method_transformed_self_ty).map |tp| {
parse_ty_data(*tp.data, cdata.cnum, tp.start, tcx,
parse_ty_data(tp.data.as_slice(), cdata.cnum, tp.start, tcx,
|_, did| translate_def_id(cdata, did))
}
}
@ -241,7 +242,7 @@ pub fn item_type(_item_id: ast::def_id, item: ebml::Doc,
}
fn doc_trait_ref(doc: ebml::Doc, tcx: ty::ctxt, cdata: cmd) -> ty::TraitRef {
parse_trait_ref_data(*doc.data, cdata.cnum, doc.start, tcx,
parse_trait_ref_data(doc.data.as_slice(), cdata.cnum, doc.start, tcx,
|_, did| translate_def_id(cdata, did))
}
@ -256,7 +257,7 @@ fn item_ty_param_defs(item: ebml::Doc, tcx: ty::ctxt, cdata: cmd,
let mut bounds = ~[];
do reader::tagged_docs(item, tag) |p| {
let bd = parse_type_param_def_data(
*p.data, p.start, cdata.cnum, tcx,
p.data.as_slice(), p.start, cdata.cnum, tcx,
|_, did| translate_def_id(cdata, did));
bounds.push(bd);
true
@ -359,7 +360,7 @@ fn item_to_def_like(item: ebml::Doc, did: ast::def_id, cnum: ast::CrateNum)
}
}
pub fn lookup_def(cnum: ast::CrateNum, data: @~[u8], did_: ast::def_id) ->
pub fn lookup_def(cnum: ast::CrateNum, data: MetadataSection, did_: ast::def_id) ->
ast::def {
let item = lookup_item(did_.node, data);
let did = ast::def_id { crate: cnum, node: did_.node };
@ -406,7 +407,7 @@ pub fn get_region_param(cdata: cmd, id: ast::NodeId)
return item_ty_region_param(item);
}
pub fn get_type_param_count(data: @~[u8], id: ast::NodeId) -> uint {
pub fn get_type_param_count(data: MetadataSection, id: ast::NodeId) -> uint {
item_ty_param_count(lookup_item(id, data))
}
@ -437,7 +438,7 @@ pub fn get_impl_vtables(cdata: cmd,
pub fn get_impl_method(intr: @ident_interner, cdata: cmd, id: ast::NodeId,
name: ast::ident) -> Option<ast::def_id> {
let items = reader::get_doc(reader::Doc(cdata.data), tag_items);
let items = reader::get_doc(section_to_ebml_doc(cdata.data), tag_items);
let mut found = None;
do reader::tagged_docs(find_item(id, items), tag_item_impl_method) |mid| {
let m_did = reader::with_doc_data(mid, parse_def_id);
@ -449,7 +450,7 @@ pub fn get_impl_method(intr: @ident_interner, cdata: cmd, id: ast::NodeId,
found
}
pub fn get_symbol(data: @~[u8], id: ast::NodeId) -> ~str {
pub fn get_symbol(data: MetadataSection, id: ast::NodeId) -> ~str {
return item_symbol(lookup_item(id, data));
}
@ -470,7 +471,7 @@ fn def_like_to_def(def_like: def_like) -> ast::def {
/// Iterates over the language items in the given crate.
pub fn each_lang_item(cdata: cmd, f: &fn(ast::NodeId, uint) -> bool) -> bool {
let root = reader::Doc(cdata.data);
let root = section_to_ebml_doc(cdata.data);
let lang_items = reader::get_doc(root, tag_lang_items);
do reader::tagged_docs(lang_items, tag_lang_items_item) |item_doc| {
let id_doc = reader::get_doc(item_doc, tag_lang_items_item_id);
@ -565,10 +566,10 @@ fn process_item_and_pop_name(&mut self,
fn each_item_of_module(&mut self, def_id: ast::def_id) -> bool {
// This item might not be in this crate. If it's not, look it up.
let items = if def_id.crate == self.cdata.cnum {
reader::get_doc(reader::Doc(self.cdata.data), tag_items)
reader::get_doc(section_to_ebml_doc(self.cdata.data), tag_items)
} else {
let crate_data = (self.get_crate_data)(def_id.crate);
let root = reader::Doc(crate_data.data);
let root = section_to_ebml_doc(crate_data.data);
reader::get_doc(root, tag_items)
};
@ -594,10 +595,10 @@ fn each_child_of_module_or_crate(&mut self, item_doc: ebml::Doc) -> bool {
// a reexport.
let other_crates_items = if child_def_id.crate ==
self.cdata.cnum {
reader::get_doc(reader::Doc(self.cdata.data), tag_items)
reader::get_doc(section_to_ebml_doc(self.cdata.data), tag_items)
} else {
let crate_data = (self.get_crate_data)(child_def_id.crate);
let root = reader::Doc(crate_data.data);
let root = section_to_ebml_doc(crate_data.data);
reader::get_doc(root, tag_items)
};
@ -661,10 +662,10 @@ fn each_child_of_module_or_crate(&mut self, item_doc: ebml::Doc) -> bool {
// This reexport may be in yet another crate.
let other_crates_items = if def_id.crate == self.cdata.cnum {
reader::get_doc(reader::Doc(self.cdata.data), tag_items)
reader::get_doc(section_to_ebml_doc(self.cdata.data), tag_items)
} else {
let crate_data = (self.get_crate_data)(def_id.crate);
let root = reader::Doc(crate_data.data);
let root = section_to_ebml_doc(crate_data.data);
reader::get_doc(root, tag_items)
};
@ -696,7 +697,7 @@ pub fn each_path(intr: @ident_interner,
// make fast. It's the source of most of the performance problems when
// compiling small crates.
let root_doc = reader::Doc(cdata.data);
let root_doc = section_to_ebml_doc(cdata.data);
let misc_info_doc = reader::get_doc(root_doc, tag_misc_info);
let crate_items_doc = reader::get_doc(misc_info_doc,
tag_misc_info_crate_items);
@ -756,7 +757,7 @@ pub fn maybe_get_item_ast(cdata: cmd, tcx: ty::ctxt,
pub fn get_enum_variants(intr: @ident_interner, cdata: cmd, id: ast::NodeId,
tcx: ty::ctxt) -> ~[@ty::VariantInfo] {
let data = cdata.data;
let items = reader::get_doc(reader::Doc(data), tag_items);
let items = reader::get_doc(section_to_ebml_doc(data), tag_items);
let item = find_item(id, items);
let mut infos: ~[@ty::VariantInfo] = ~[];
let variant_ids = enum_variant_ids(item, cdata);
@ -1188,8 +1189,15 @@ fn list_crate_attributes(intr: @ident_interner, md: ebml::Doc, hash: &str,
out.write_str("\n\n");
}
pub fn get_crate_attributes(data: @~[u8]) -> ~[ast::Attribute] {
return get_attributes(reader::Doc(data));
pub fn get_crate_attributes(data: MetadataSection) -> ~[ast::Attribute] {
return get_attributes(section_to_ebml_doc(data));
}
pub fn section_to_ebml_doc(data: MetadataSection) -> ebml::Doc {
match data {
CopiedSection(data) => reader::Doc(data),
UnsafeSection(_, buf, len) => reader::unsafe_Doc(buf, len)
}
}
#[deriving(Clone)]
@ -1200,9 +1208,9 @@ pub struct crate_dep {
hash: @str
}
pub fn get_crate_deps(data: @~[u8]) -> ~[crate_dep] {
pub fn get_crate_deps(data: MetadataSection) -> ~[crate_dep] {
let mut deps: ~[crate_dep] = ~[];
let cratedoc = reader::Doc(data);
let cratedoc = section_to_ebml_doc(data);
let depsdoc = reader::get_doc(cratedoc, tag_crate_deps);
let mut crate_num = 1;
fn docstr(doc: ebml::Doc, tag_: uint) -> @str {
@ -1220,7 +1228,7 @@ fn docstr(doc: ebml::Doc, tag_: uint) -> @str {
return deps;
}
fn list_crate_deps(data: @~[u8], out: @io::Writer) {
fn list_crate_deps(data: MetadataSection, out: @io::Writer) {
out.write_str("=External Dependencies=\n");
let r = get_crate_deps(data);
@ -1233,13 +1241,13 @@ fn list_crate_deps(data: @~[u8], out: @io::Writer) {
out.write_str("\n");
}
pub fn get_crate_hash(data: @~[u8]) -> @str {
let cratedoc = reader::Doc(data);
pub fn get_crate_hash(data: MetadataSection) -> @str {
let cratedoc = section_to_ebml_doc(data);
let hashdoc = reader::get_doc(cratedoc, tag_crate_hash);
hashdoc.as_str_slice().to_managed()
}
pub fn get_crate_vers(data: @~[u8]) -> @str {
pub fn get_crate_vers(data: MetadataSection) -> @str {
let attrs = decoder::get_crate_attributes(data);
let linkage_attrs = attr::find_linkage_metas(attrs);
@ -1264,10 +1272,10 @@ fn iter_crate_items(intr: @ident_interner, cdata: cmd,
};
}
pub fn list_crate_metadata(intr: @ident_interner, bytes: @~[u8],
pub fn list_crate_metadata(intr: @ident_interner, bytes: MetadataSection,
out: @io::Writer) {
let hash = get_crate_hash(bytes);
let md = reader::Doc(bytes);
let md = section_to_ebml_doc(bytes);
list_crate_attributes(intr, md, hash, out);
list_crate_deps(bytes, out);
}
@ -1289,7 +1297,7 @@ pub fn translate_def_id(cdata: cmd, did: ast::def_id) -> ast::def_id {
}
pub fn get_link_args_for_crate(cdata: cmd) -> ~[~str] {
let link_args = reader::get_doc(reader::Doc(cdata.data), tag_link_args);
let link_args = reader::get_doc(section_to_ebml_doc(cdata.data), tag_link_args);
let mut result = ~[];
do reader::tagged_docs(link_args, tag_link_args_arg) |arg_doc| {
result.push(arg_doc.as_str());

44
src/librustc/metadata/loader.rs
View File

@ -11,7 +11,7 @@
//! Finds crate binaries and loads their metadata
use lib::llvm::{False, llvm, mk_object_file, mk_section_iter};
use lib::llvm::{False, llvm, mk_object_file, mk_section_iter, ObjectFile};
use metadata::decoder;
use metadata::encoder;
use metadata::filesearch::FileSearch;
@ -54,7 +54,13 @@ pub struct Context {
intr: @ident_interner
}
pub fn load_library_crate(cx: &Context) -> (~str, @~[u8]) {
#[deriving(Clone)]
pub enum MetadataSection {
CopiedSection(@~[u8]),
UnsafeSection(@ObjectFile, *u8, uint)
}
pub fn load_library_crate(cx: &Context) -> (~str, MetadataSection) {
match find_library_crate(cx) {
Some(t) => t,
None => {
@ -65,7 +71,7 @@ pub fn load_library_crate(cx: &Context) -> (~str, @~[u8]) {
}
}
fn find_library_crate(cx: &Context) -> Option<(~str, @~[u8])> {
fn find_library_crate(cx: &Context) -> Option<(~str, MetadataSection)> {
attr::require_unique_names(cx.diag, cx.metas);
find_library_crate_aux(cx, libname(cx), cx.filesearch)
}
@ -87,7 +93,7 @@ fn find_library_crate_aux(
cx: &Context,
(prefix, suffix): (~str, ~str),
filesearch: @filesearch::FileSearch
) -> Option<(~str, @~[u8])> {
) -> Option<(~str, MetadataSection)> {
let crate_name = crate_name_from_metas(cx.metas);
// want: crate_name.dir_part() + prefix + crate_name.file_part + "-"
let prefix = fmt!("%s%s-", prefix, crate_name);
@ -171,7 +177,7 @@ pub fn note_linkage_attrs(intr: @ident_interner,
}
}
fn crate_matches(crate_data: @~[u8],
fn crate_matches(crate_data: MetadataSection,
metas: &[@ast::MetaItem],
hash: @str) -> bool {
let attrs = decoder::get_crate_attributes(crate_data);
@ -197,17 +203,17 @@ pub fn metadata_matches(extern_metas: &[@ast::MetaItem],
}
fn get_metadata_section(os: os,
filename: &Path) -> Option<@~[u8]> {
filename: &Path) -> Option<MetadataSection> {
unsafe {
let mb = do filename.with_c_str |buf| {
llvm::LLVMRustCreateMemoryBufferWithContentsOfFile(buf)
};
if mb as int == 0 { return option::None::<@~[u8]>; }
let of = match mk_object_file(mb) {
if mb as int == 0 { return None; }
let of = @match mk_object_file(mb) {
option::Some(of) => of,
_ => return option::None::<@~[u8]>
_ => return None
};
let si = mk_section_iter(of.llof);
let si = mk_section_iter((*of).llof);
while llvm::LLVMIsSectionIteratorAtEnd(of.llof, si.llsi) == False {
let name_buf = llvm::LLVMGetSectionName(si.llsi);
let name = str::raw::from_c_str(name_buf);
@ -233,28 +239,24 @@ fn get_metadata_section(os: os,
let must_decompress = *ptr::offset(cvbuf, vlen as int) == 1;
let cvbuf1 = ptr::offset(cvbuf, vlen as int + 1);
do vec::raw::buf_as_slice(cvbuf1, csz-vlen-1) |bytes| {
if must_decompress {
if must_decompress {
do vec::raw::buf_as_slice(cvbuf1, csz-vlen-1) |bytes| {
debug!("inflating %u bytes of compressed metadata",
csz - vlen);
let inflated = flate::inflate_bytes(bytes);
found = Some(@(inflated));
} else {
// Copy the byte vector as fast as possible
let mut buf = vec::with_capacity(bytes.len());
vec::raw::set_len(&mut buf, bytes.len());
vec::raw::copy_memory(buf, bytes, bytes.len());
found = Some(@buf)
found = Some(CopiedSection(@inflated));
}
} else {
found = Some(UnsafeSection(of, cvbuf1, csz-vlen-1))
}
if found != None {
if !found.is_none() {
return found;
}
}
llvm::LLVMMoveToNextSection(si.llsi);
}
return option::None::<@~[u8]>;
return None;
}
}

8
src/librustc/middle/astencode.rs
View File

@ -1022,7 +1022,7 @@ fn read_ty_noxcx(&mut self,
tcx: ty::ctxt, cdata: @cstore::crate_metadata) -> ty::t {
do self.read_opaque |_, doc| {
tydecode::parse_ty_data(
*doc.data,
doc.data.as_slice(),
cdata.cnum,
doc.start,
tcx,
@ -1044,7 +1044,7 @@ fn read_ty(&mut self, xcx: @ExtendedDecodeContext) -> ty::t {
return do self.read_opaque |this, doc| {
let ty = tydecode::parse_ty_data(
*doc.data,
doc.data.as_slice(),
xcx.dcx.cdata.cnum,
doc.start,
xcx.dcx.tcx,
@ -1060,7 +1060,7 @@ fn read_ty(&mut self, xcx: @ExtendedDecodeContext) -> ty::t {
fn type_string(doc: ebml::Doc) -> ~str {
let mut str = ~"";
for i in range(doc.start, doc.end) {
str.push_char(doc.data[i] as char);
str.push_char(doc.data.as_slice()[i] as char);
}
str
}
@ -1074,7 +1074,7 @@ fn read_type_param_def(&mut self, xcx: @ExtendedDecodeContext)
-> ty::TypeParameterDef {
do self.read_opaque |this, doc| {
tydecode::parse_type_param_def_data(
*doc.data,
doc.data.as_slice(),
doc.start,
xcx.dcx.cdata.cnum,
xcx.dcx.tcx,